Have you ever had your headlights go out while driving? Broken headlight bulbs are a common problem that many car owners have to face. There are some common reasons why your car's headlights aren't working. In this article, we'll explore some of the most common causes and how to go about fixing them. We also discuss what to do if the cause of the problem is unknown or if the problem is more serious and requires further investigation. So, if you're wondering why your car stopped illuminating the nighttime road in front of you, read on!